sems/apps/examples/jukecall/Jukecall.cpp

/*
 * $Id: Announcement.cpp 145 2006-11-26 00:01:18Z sayer $
 *
 * Copyright (C) 2006 iptego GmbH
 *
 * This file is part of sems, a free SIP media server.
 *
 * sems is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * For a license to use the sems software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact iptel.org by e-mail at the following addresses:
 *    info@iptel.org
 *
 * sems is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with this program; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "Jukecall.h"
#include "AmApi.h"
#include "AmUtils.h"
#include "sems.h"
#include "log.h"

#define MOD_NAME "jukecall"

EXPORT_SESSION_FACTORY(JukecallFactory,MOD_NAME);

// you can replace this with configurable file
#define INITIAL_ANNOUNCEMENT "../apps/examples/jukecall/wav/greeting.wav"
#define JUKE_DIR             "../apps/examples/jukecall/wav/"

JukecallFactory::JukecallFactory(const string& _app_name)
	: AmSessionFactory(_app_name)
{
}


int JukecallFactory::onLoad()
{
	// read configuration

	DBG("JukecallFactory loaded.\n");
    return 0;
}

AmSession* JukecallFactory::onInvite(const AmSipRequest& req)
{
	if (req.user.length() <= 3) {
		throw AmSession::Exception(403, "Need a number to call");
	}

	JukecallSession* dlg = new JukecallSession();

	return dlg;
}

JukecallSession::JukecallSession() 
	: AmB2ABCallerSession()
{
}

JukecallSession::~JukecallSession() 
{
}

void JukecallSession::onSessionStart(const AmSipRequest& req)
{
    DBG("-----------------------------------------------------------------\n");
    DBG("playing file\n");

    if(initial_announcement.open(INITIAL_ANNOUNCEMENT,AmAudioFile::Read)) {
		dlg.bye();
		throw string("CTConfDDialog::onSessionStart: Cannot open file '%s'\n", INITIAL_ANNOUNCEMENT);
	}

	// set this as our output
    setOutput(&initial_announcement);

	state = JC_initial_announcement;
}

void JukecallSession::onDtmf(int event, int duration_msec) {
	DBG("got DTMF %d\n", event);

	// no jukebox if other party is not connected
	if (getCalleeStatus()!=AmB2ABCallerSession::Connected)
		return;

	// no jukebox in the beginning and while playing
	if (state != JC_connect) 
		return;

	DBG("playing back file...\n");

	song.reset(new AmAudioFile());
	if (song->open(JUKE_DIR+int2str(event)+".wav",AmAudioFile::Read)) {
		ERROR("could not open file\n");
		return;
	}
    setOutput(song.get());
	state = JC_juke;

	relayEvent(new JukeEvent(event));
}

void JukecallSession::process(AmEvent* event)
{

    AmAudioEvent* audio_event = dynamic_cast<AmAudioEvent*>(event);
    if(audio_event && (audio_event->event_id == AmAudioEvent::cleared)){
		switch(state) {
		case JC_initial_announcement: {
			state = JC_connect;
			string callee = "sip:" + dlg.user.substr(3) + "@" + dlg.domain;
			DBG("-------------------------- connecting %s ------------------------\n", callee.c_str());
			connectCallee(callee, callee, 
						  dlg.remote_party, dlg.remote_uri);

			return;

		} break;

		case JC_juke: {
			DBG("reconnecting audio\n");
			reconnectAudio();
			state = JC_connect;
			return;
		}; break;

		default: {
			DBG("cleared in other state.\n");
			return;
		};
		}
		
    }

    AmB2ABCallerSession::process(event);
}

AmB2ABCalleeSession* JukecallSession::createCalleeSession() {
	AmB2ABCalleeSession* sess = new JukecalleeSession(getLocalTag());
	return sess;
}

JukecalleeSession::JukecalleeSession(const string& other_tag) 
	: AmB2ABCalleeSession(other_tag)
{
	setDtmfDetectionEnabled(false);
}


void JukecalleeSession::process(AmEvent* event) {
    JukeEvent* juke_event = dynamic_cast<JukeEvent*>(event);
    if(juke_event) {
		song.reset(new AmAudioFile());
		if (song->open(JUKE_DIR+int2str(event->event_id)+".wav",AmAudioFile::Read)) {
			ERROR("could not open file\n");
			return;
		}
		setOutput(song.get());
		return;
	}

    AmAudioEvent* audio_event = dynamic_cast<AmAudioEvent*>(event);
    if(audio_event && (audio_event->event_id == AmAudioEvent::cleared)){
		DBG("reconnecting audio\n");
		reconnectAudio();
		return;
	}
	
	AmB2ABCalleeSession::process(event);
}